Winding machine



- J. A. CAMERON WINDING MACHINE Filed July 13, .95s

2 Sheets-Sheet 1 INVENTOR 4f ATTORNEY Dec. 3, 1935.

J. A. CAMERON 2,023,165

WINDING MACHINE Filed July 15, 1935 '2 Sheets-Sheet 2 9% INVENIOR W 1 A TTORNE Y Patented Dec. 3, 1935 UNITED STATES PATENT OFFICE WINDING MACHINE Application July 13, 1933, Serial No. 680,241

9 Claims.

The present invention relates to winding machines or to slitting and winding machines, and has for its main object and feature a closer interrelation between the feeding and the winding,

and/or the slitting and the winding of the web or webs of flexible material.

In the accompanying drawings the invention is disclosed in several concrete and preferred forms in which:

Fig. 1 is a view looking in the direction of arrow B of Fig. 2, with parts broken .y and in section, of one form of winding or winning and slitting machine embodying the invention;

Fig. 2 is a view in elevation, and partly in section substantially on the plane of line 22 of Fig. 1;

Fig. 3 is a detail view looking in the direction of arrows 33 of Fig. 1;

Fig. 4 is a sectional detail view substantially on the plane of line d4 of Fig. 2;

Fig. 5 is a view similar to Fig. 4, but showing a modified form of the invention;

Fig. 6 is a view similar to Figs. 4 and 5 but showing a still further modified form of the in- 5 vention;

Fig. 7 is a diagrammatic view showing a different method of threading the web through the machine;

Fig. 8 is a detail view similar to Fig. 3 but 30 showing the gear arrangement used in connection with the arrangement of Fig. 7; and

Fig. 9 is a detail view showing the use of a brake in connection with the invention.

The type of winding machine chosen as an 335 example of machines to which the invention can be applied consists of two winding drums in and I l rotating in the same direction and supporting in the'valley between them a winding shaft 82 on which the wound material is carried. If desired 40 a riding or top pressure roller 13 may also be used. Web It comes here from a mill roll l5 provided with a brake I5 and is led over one or more guides as H, around feed roll I8 to front winding drum l0 and thence to winding shaft l2. As is 45 usual, the winding shaft and riding roller are displace-able in an upward direction in response to the accumulation of wound material on the winding shaft. Feed roll it may be, and here is, the backing roll of a slitting device, of which roll 50 i8 constitutes one element and score-cut slitters 19 the other element.

Front winding drum Ill is driven from any suitable source of power, such as motor 20 which is here shown coupled directly to shaft extension 2| ll of said front drum. Rear drum H is driven by frictional contact with the wound material, but is connected with feed roll I 8 by suitable transmission means such as sprockets 22 and 23 and chain 24 (Fig. 3).

When power is applied to front drum Hi, the rotation of the latter tends to move the web, this action also being assisted by the tendency of winding shaft l2 to rotate especially when a driven riding roller is employed; The mill roll and its brake and the frictional resistance of m guide ll, roll l8 and rear drum ll tend to oppose the urge of front drum l0, and if this opposing force is stronger than the urge to move the web, then front drum ID will slip with respect to the web and the latter will stand still. The tension 15 on the web will thereby be increased and presently roll l8 or rear winding drum II will start to rotate and the web will begin to move. It is immaterial whether theoretically roll ill or rear drum H is the first to move because either one will drive the other as will be apparent and will continue in synchronism throughout the winding operation. It is believed that rear winding drum ll controls the winding operation to a greater extent than does the front winding drum, 25 and therefore the web should not be fed faster or slower to the rear winding drum than the speed at which the latter is able to take it up. By controlling the speed of roll l8 from the rear winding drum, it will be understood that the web is fed at the correct speed to the front winding drum, and therefore said front winding drum will feed said web at the correct speed to the rear winding drum. Further it will be seen that the speed of the slitting device, if used, will be in synchronism with the winding action of the rear drum and with the speed of the web. In acting upon certain materials, this is of the greatest importance because the above-mentioned control of the feed of the web tends to produce a uniformly dense roll of material, and if the slitting device is employed this interrelation also tends to promote good slitting. To complete this control during the slowing down of the machine, it is desirable to use a brake (Fig. 9) which here consists of a lever 25 pivoted at 26 and connected to one end of a brake band 21 anchored at 28 and trained in S-formation over brake drums 29 and 30 carried by the winding drums. It will be seen that by applying the brake the speed of the two winding drums and of the feed roll is decelerated uniformly and that therefore the speed of the web and the speed of winding is maintained in synchronism. If a slitting device is used it will also, due to the control exercised by the rear winding drum, be prevented from racing during the slowing down of the machine, and to prevent this is of the greatest importance in order to obtain good, clean slitting.

As has been indicated above, the rear winding drum need not be driven at all except by friction of the wound material, but if desired there -may be an initial urge imparted to the rear winding drum by rotation of the front winding drum, in which case the construction presently to be described may be employed, which construction also embodies means for driving the riding roller. Carried on the shaft of front winding drum I is a sprocket 3| that transmits motion to sprocket 32 of the rear winding drum by means of chain 33. Sprocket 32 (Fig. 4) is carrried by hub 34 which is free to rotate on the shaft 35 of drum ll, there being nevertheless a frictional urge between hub 34 and shaft 35. This frictional urge helps to start the rear winding drum at the beginning of the operation and also transmits a practically negligible amount of power during the winding operation. In the present case a pulley 36 is bolted to sprocket 32 as at 31, and a belt 38 is trained over this pulley, thence over pulley 39 on the framework, over pulley 40 on the riding roller, over pulley 4| on slidable riding roller carriage 42 and thence back to pulley 36. In this manner the riding roller is driven at all times from front winding drum l0. Riding roller carriage 42 is here carried by a flexible connection 43, that passes over sprocket 44 at the top of the machine, and has a counterweight 45 attached to its other end. Also there may be used additional weights 46 on connection 43 which at the beginning of the winding operation tend to overweight the riding roller and winding shaft to thereby press the latter more firmly against the winding drums but which, as the wound material increases in diameter and the riding roller rises tend to counterbalance and lighten the load in a manner well understood.

It is sometimes desired to drive both winding drums positively and in order to do this, the modification shown in Fig. may be employed in which a flanged collar 41 is keyed to shaft 35 and bolted at 48 to sprocket 32. With this construction both drums may be driven, or by removing bolts 48 only the front drum and the riding roller are driven.

In Fig. 6 is shown a speed-controlled clutch for the shaft of the rear winding drum, which clutch is thrown out when the parts have attained a given speed. As there indicated sprocket 32a and pulley 36a are mounted to rotate loosely on sleeve 49, which latter is slldably keyed on shaft 35a of the rear winding drum. Mounted fast on shaft 35a is an abutment member 50 in which springs 5! are anchored, which springs press against flange 52 of sleeve 49 and tend to engage friction surfaces 53 between pulley 36a and end cap 54, which latter is bolted to the end of shaft 35a. Mounted on end cap 54 and therefore rotating with shaft 35a are centrifugal weights 55 which engage pins 56 of sleeve 49. It will now be seen that, at the beginning of the winding operation sprocket 32a will drive shaft 35a because springs 51 will cause the clutch to engage. As the speed of the gear winding drum increases, weights 55 will swingoutwardly on their pivots and by pushing against pins 56 will move sleeve 49 endwise in opposition to the action of springs 5| thereby throwing out the clutch and permitting the rear winding drum to be driven by the wound material.

In Fig. 2 is shown one method of threading the web, but it will be readily understood that the web may be otherwise led through the machine. In Fig. 7 is shown a diagram in which the web is led over guide roller 51, thence over feed roll 58, in between winding drums 59 and 60 and over winding drum 59. In this instance it will be seen that the feed roll rotates in a direction opposite to that of the winding drums. In order therefore to drive feed roll 58 from winding drum 60 and vice versa, a slightly different arrangement of gearing is required. As shown in Fig. 8, drum 60 is provided with a gear 6| that meshes with another gear 62. Rotating with gear 62 is a sprocket 63 that is connected by means of chain 64 with sprocket 65 on roll 58.

I claim:

1. In a winding machine, two winding drums rotating in the same direction to support, in the valley between them, woundflexible web material; a. roll to feed flexible material to one of said drums; means to drive the drum to which the material is fed by the roll; and interconnecting transmission devices, independent of the flrstmentioned drum, between the other drum and 5 the roll.

2. In a winding machine, two winding drums rotating in the same direction to support, in the valley between them, wound flexible web material; means to drive one of said drums, the other of said drums being rotated by frictional contact with the wound material; a roll to feed flexible material to the driven drum; and interconnecting transmission devices between the other drum and the roll.

3. In a winding machine, two winding drums rotating in the same direction to support, in the valley between them, wound flexible web material; a roll to feed flexible material to one of said drums; means to drive the drum to which the material is fed by the roll; a riding roller to press on top of the wound material; interconnecting transmission devices between said drum and riding roller; and interconnecting transmission devices, independent of the first-mentioned drum, between the other drum and the roll.

4.'In a winding machine, two winding drums rotating in the same direction to support, in the valley between them, wound flexible web material; means to drive one of said drums, the other of said drums being rotated by frictional contact with the wound material; a roll to feed flexible material to the driven drum; a riding roller to press on top of the wound material; interconnecting transmission devices between said drum and riding roller; and interconnecting transmission devices between the other drum and the roll.

5. In a winding machine, the combination of a winding drum rotated by frictional contact with the wound flexible web material it supports; a feed roll for the web; and interconnecting transmission devices between the drum and the roll.

6. In a winding machine, two winding drums rotating in the same direction to support, in the valley between them, wound flexible web material; means to drive one of said drums the other of said drums being rotated by frictional contact with the wound material; and means, governed by the rotation of said other drum. to control the feeding of the web to the driven drum.

'7. In a winding machine, two winding drums rotating in the same direction to support, in the valley between them, wound flexible web material; means to drive one of said drums the other of said drums being rotated by frictional contact with the wound material: and means, governed by the feeding or the web to the driven drum, to control the rotation oi said other drum.

8. In a winding machine, two winding drums rotating in the same direction to support, in the valley between them. wound flexible web material; means to drive one of said drums the other of said drums being rotated by frictional contact with the wound material; feeding means to feed the web to the driven drum; and means to synchronize the take-up oi the web by the other valley between them, wound flexible web mate- 5 rial; a roll to feed flexible material to one of said drums: means to drive the drum to which the material is fed by the roll; interconnecting transmission devices, independent of the first-mentioned drum, between the other drum and the 10 roll; and brake means to retard the rotation of i both winding drums.

JAMES A. CAMERON. 

